Consumes pre-classified visual-diff JSON and a reviewer-signed acceptance log to produce a single go/no-go CI verdict for visual regression. Blocks when intentional baseline changes lack a non-author reviewer sign-off or when regressions are present, and emits a markdown + JSON artifact for the CI step. Use this skill when the gate's input is pre-classified diff data and the enforcement concern is reviewer approval, not when the goal is fanning out to multiple engines (use a multi-engine CI orchestrator for that).